Cabot Norit Activated Carbon Increases Price for Activated Carbon Globally

September 5, 2013

BOSTONCabot Corporation (NYSE: CBT) announces that Cabot Norit Activated Carbon will raise prices globally on all grades of activated carbon. Price increases will range from 5 percent to 15 percent, depending on the specific activated carbon product. This change will be effective for all shipments made on or after October 1, 2013, or as customer contracts allow.

This increase is required to support Cabot’s continued investment in product and application development, fund new investments in technology and process improvements, and keep pace with increasing costs for raw materials and packaging.

ABOUT CABOT CORPORATION

Cabot Corporation (NYSE: CBT) is a global specialty chemicals and performance materials company, headquartered in Boston, Massachusetts. The company is a leading provider of rubber and specialty carbons, activated carbon, inkjet colorants, cesium formate drilling fluids, fumed silica,and aerogel. For more information on Cabot, please visit the company’s website at: http://http://www.cabotcorp.com.

Safe Harbor Statement under the Private Securities Litigation Reform Act of 1995: Statements in the press release regarding Cabot's business that are not historical facts are forward looking statements that involve risks and uncertainties. For a discussion of such risks and uncertainties, which could cause actual results to differ from those contained in the forward looking statements, see “Risk Factors” in the Company’s Annual Report on Form 10-K.

 Contact:

Vanessa Craigie
Corporate Communications
(617) 342-6015
vanessa.craigie@cabotcorp.com

Hilary Banda
Marketing Communications
(617) 342-6264
hilary.banda@cabotcorp.com